Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A transmitter, comprising: a processor adapted to: convert a primary sequence of modulation symbols into a primary signal in the frequency domain, using a primary pulse shape; convert an auxiliary sequence of modulation symbols, created from the primary sequence, to an auxiliary signal in the frequency domain using an auxiliary pulse shape; and create, based on the primary signal and the auxiliary signal, a joint output signal for transmission to a receiver in the time domain.
This invention relates to wireless communication transmitters and addresses the problem of efficiently generating a transmission signal that can carry both primary data and auxiliary information. The transmitter includes a processor. This processor performs several key functions. First, it takes a primary sequence of modulation symbols and converts it into a primary signal. This conversion is done in the frequency domain and utilizes a specific primary pulse shape. Second, it generates an auxiliary sequence of modulation symbols. This auxiliary sequence is derived from the primary sequence of modulation symbols. The processor then converts this auxiliary sequence into an auxiliary signal, also in the frequency domain, using a distinct auxiliary pulse shape. Finally, the processor combines the primary signal and the auxiliary signal to create a single joint output signal. This joint output signal is then prepared for transmission to a receiver in the time domain. This approach allows for the transmission of both primary data and supplementary information within a single signal.
2. The transmitter of claim 1 , wherein the processor is configured to perform at least one of the following operations on the primary sequence, or on the auxiliary sequence, or on a compounded sequence thereof: when the processing is in a frequency domain: a complex phase shift by π/2 or a multiple thereof; a discrete Fourier transformation, DFT; a cyclic extension; a filter process with information about the primary pulse shape for the primary sequence and/or about the auxiliary pulse shape for the auxiliary sequence; and when the processing is in a time domain: an up-sampling; a filter process with information about the primary pulse shape for the primary sequence and/or about the auxiliary pulse shape for the auxiliary sequence.
This invention relates to wireless communication systems, specifically to a transmitter designed to enhance signal processing for improved transmission efficiency and reliability. The transmitter generates and processes primary and auxiliary sequences to optimize signal characteristics in both frequency and time domains. The primary sequence represents the main data-bearing signal, while the auxiliary sequence provides additional information or redundancy to improve robustness. The transmitter includes a processor configured to perform various operations on these sequences, either individually or combined. In the frequency domain, the processor can apply a complex phase shift of π/2 or its multiples, perform a discrete Fourier transform (DFT), add cyclic extensions, or apply filtering based on the pulse shapes of the primary and auxiliary sequences. These operations help shape the signal spectrum and mitigate interference. In the time domain, the processor can upsample the sequences or apply filtering tailored to the pulse shapes of the primary and auxiliary sequences, ensuring precise signal reconstruction and reducing distortion. By dynamically adjusting these operations, the transmitter adapts to varying channel conditions, improving signal integrity and transmission efficiency. The invention addresses challenges in wireless communication, such as interference mitigation and signal distortion, by leveraging flexible signal processing techniques in both domains.
3. The transmitter of claim 1 , wherein the auxiliary sequence is created from the primary sequence by generating each modulation symbol of the auxiliary sequence from a corresponding modulation symbol of the primary sequence and at least two preceding modulation symbols of the primary sequence.
This invention relates to wireless communication systems, specifically to a transmitter that generates an auxiliary sequence from a primary sequence for improved signal transmission. The primary sequence consists of modulation symbols used in digital communication, such as phase-shift keying (PSK) or quadrature amplitude modulation (QAM) symbols. The auxiliary sequence is derived by generating each of its modulation symbols based on a corresponding modulation symbol from the primary sequence and at least two preceding modulation symbols from the same primary sequence. This process ensures that the auxiliary sequence retains a structured relationship with the primary sequence, which can enhance signal robustness, reduce interference, or improve error correction in the receiver. The transmitter may use this auxiliary sequence for various purposes, such as generating reference signals, pilot tones, or additional data streams that are correlated with the primary sequence. The method of generating the auxiliary sequence ensures that it is computationally efficient while maintaining a predictable relationship with the primary sequence, which is critical for reliable communication in noisy or interference-prone environments. The invention is particularly useful in systems where signal integrity and synchronization are paramount, such as in 5G, LTE, or other advanced wireless networks.
4. The transmitter of claim 3 , further comprising cyclically extending a plurality of finite sub-sequences of consecutive symbols of the primary sequence to create a plurality of respective finite sub-sequences of consecutive symbols of the auxiliary sequence.
This invention relates to wireless communication systems, specifically improving signal transmission robustness by generating an auxiliary sequence from a primary sequence. The primary sequence is a sequence of symbols used for communication, and the auxiliary sequence is derived from it to enhance transmission reliability. The transmitter cyclically extends a plurality of finite sub-sequences of consecutive symbols from the primary sequence to create corresponding sub-sequences in the auxiliary sequence. This process involves selecting overlapping or non-overlapping segments of the primary sequence and repeating them in a structured manner to form the auxiliary sequence. The auxiliary sequence is then used alongside the primary sequence to improve error correction, synchronization, or other signal processing tasks in the receiver. The cyclic extension ensures that the auxiliary sequence maintains a predictable relationship with the primary sequence, which can be exploited for efficient decoding or interference mitigation. This technique is particularly useful in environments where signal integrity is compromised by noise, multipath fading, or other channel impairments. The method ensures that the auxiliary sequence retains sufficient redundancy and correlation with the primary sequence to facilitate robust signal recovery.
5. The transmitter of claim 1 , wherein the processor is adapted for transmission of the joint output signal using any one of a group: frequency division multiplexing, FDM; discrete-Fourier-transform spread orthogonal FDM, DFT-s-OFDM; single carrier FDM, SC-FDM; and/or a transmission based on frequency division multiple access (FDMA).
This invention relates to wireless communication systems, specifically improving signal transmission efficiency and compatibility. The problem addressed is the need for flexible and efficient transmission methods in modern wireless networks, which must support diverse modulation schemes while maintaining low complexity and high spectral efficiency. The invention describes a transmitter system with a processor configured to generate a joint output signal by combining multiple input signals. The processor applies a precoding operation to the input signals, which may include user data, reference signals, or synchronization signals, to produce the joint output signal. The precoding operation ensures that the combined signal maintains orthogonality between different transmitted signals, reducing interference and improving reception quality. The transmitter further supports multiple transmission techniques, including frequency division multiplexing (FDM), discrete-Fourier-transform spread orthogonal FDM (DFT-s-OFDM), single carrier FDM (SC-FDM), and frequency division multiple access (FDMA). These techniques allow the transmitter to adapt to different network conditions and requirements, such as supporting multiple users or optimizing spectral efficiency. The system ensures that the joint output signal is compatible with various modulation schemes while maintaining low computational complexity, making it suitable for high-speed wireless communication applications.
6. The transmitter of claim 1 , wherein the processor is adapted to periodically insert at least one fixed finite sequence of symbols, including a unique word, UW, into the primary sequence.
This invention relates to wireless communication systems, specifically improving synchronization and error detection in data transmission. The problem addressed is maintaining reliable communication in noisy or interference-prone environments by ensuring receivers can accurately detect and synchronize with transmitted data streams. The transmitter includes a processor that generates a primary sequence of symbols for transmission. To enhance synchronization and error detection, the processor periodically inserts at least one fixed finite sequence of symbols into the primary sequence. This inserted sequence includes a unique word (UW), a predefined pattern that serves as a synchronization marker. The UW allows the receiver to accurately identify the start of data frames, correct timing offsets, and detect transmission errors. The fixed nature of the sequence ensures consistency, while its periodic insertion provides regular synchronization points. This method improves robustness in dynamic communication channels, reducing the likelihood of data loss or misalignment. The invention is particularly useful in high-speed or long-distance wireless transmissions where signal integrity is critical.
7. The transmitter of claim 1 , wherein the processor is adapted to periodically insert guard intervals into the joint output signal transmitted in the time domain, wherein the guard intervals include at least one member of: a cyclic prefix, CP; a cyclic postfix; a zero prefix, ZP; and a zero tail, ZT.
This invention relates to wireless communication systems, specifically to a transmitter designed to mitigate inter-symbol interference (ISI) and inter-carrier interference (ICI) in time-domain signal transmission. The transmitter includes a processor that generates a joint output signal by combining multiple input signals, such as those from different users or data streams, into a single time-domain signal. To prevent distortion caused by multipath propagation and timing misalignment, the processor periodically inserts guard intervals into the joint output signal. These guard intervals can take various forms, including a cyclic prefix (CP), cyclic postfix, zero prefix (ZP), or zero tail (ZT). The cyclic prefix or postfix involves duplicating a portion of the signal at the beginning or end, respectively, while the zero prefix or zero tail inserts a sequence of zeros. These techniques help isolate transmitted symbols, reducing interference and improving signal integrity in high-speed or multi-user communication environments. The transmitter is particularly useful in orthogonal frequency-division multiplexing (OFDM) systems and other applications where precise timing and interference management are critical.
8. The transmitter of claim 1 , wherein the primary sequence modulation symbols map a data stream according to a Binary-Phase Shift Keying, BPSK, modulation scheme.
This invention relates to wireless communication systems, specifically improving data transmission efficiency and reliability. The problem addressed is the need for robust modulation techniques that can effectively transmit data over noisy or interference-prone channels while maintaining low complexity and high spectral efficiency. The invention describes a transmitter system that includes a primary sequence modulation component designed to map a data stream using a Binary-Phase Shift Keying (BPSK) modulation scheme. BPSK is a phase modulation technique where the phase of the carrier signal is shifted by 180 degrees to represent binary data, providing a simple yet effective method for encoding information. The transmitter further includes a secondary sequence modulation component that operates in conjunction with the primary sequence to enhance transmission performance. The secondary sequence modulation may involve additional processing steps such as error correction, spreading, or interleaving to further improve data integrity. The combined use of primary and secondary modulation sequences ensures that the transmitted signal is resilient to channel distortions and interference, making it suitable for applications requiring high reliability, such as military communications, satellite links, or industrial IoT devices. The system is designed to be adaptable, allowing for adjustments in modulation parameters based on channel conditions to optimize performance dynamically.
9. The transmitter of claim 1 , wherein the sequence of modulation symbols of the primary sequence maps a data stream according to a higher order Phase Shift Keying, PSK, modulation scheme using a finite-memory differential mapping scheme, and the primary sequence and the auxiliary sequence further undergoing complex phase rotation between consecutive symbols by a fraction of π.
This invention relates to wireless communication systems, specifically improving data transmission efficiency and reliability using advanced modulation techniques. The problem addressed is the need for higher data rates and robust signal transmission in challenging environments, such as those with multipath interference or fading. The invention describes a transmitter that generates a primary sequence of modulation symbols and an auxiliary sequence. The primary sequence encodes a data stream using a higher-order Phase Shift Keying (PSK) modulation scheme, which allows multiple bits to be transmitted per symbol, increasing data throughput. The modulation employs a finite-memory differential mapping scheme, which improves error resilience by encoding data in the phase differences between consecutive symbols rather than absolute phase values. This differential approach reduces sensitivity to phase noise and channel distortions. Additionally, the primary and auxiliary sequences undergo a complex phase rotation between consecutive symbols by a fraction of π (pi). This rotation further enhances signal robustness by introducing controlled phase shifts that help mitigate interference and improve synchronization. The auxiliary sequence may be used for error correction, channel estimation, or other signal processing tasks to ensure reliable data recovery at the receiver. The combination of higher-order PSK modulation, differential mapping, and controlled phase rotation enables efficient and reliable data transmission in wireless communication systems, particularly in environments with high interference or multipath effects.
10. The transmitter of claim 1 , wherein a Peak to Average Power Ratio, PAPR, of the joint output signal is lower than the PAPR of the primary signal.
This invention relates to wireless communication systems, specifically to a transmitter that reduces the Peak to Average Power Ratio (PAPR) of a transmitted signal. High PAPR in wireless signals can lead to inefficiencies in power amplifiers, causing distortion and reduced battery life in devices. The transmitter combines a primary signal with at least one secondary signal to produce a joint output signal. The secondary signal is generated using a phase rotation technique that aligns the peaks of the primary and secondary signals, effectively canceling or reducing the overall peak power. This results in a joint output signal with a lower PAPR compared to the primary signal alone. The transmitter includes a signal generator to produce the secondary signal, a combiner to merge the primary and secondary signals, and a phase rotator to adjust the phase of the secondary signal for optimal peak cancellation. The technique is particularly useful in multi-carrier systems like OFDM, where high PAPR is a common issue. By reducing PAPR, the transmitter improves power amplifier efficiency, extends device battery life, and minimizes signal distortion. The invention can be applied in various wireless communication standards, including 5G and Wi-Fi, to enhance signal transmission quality and energy efficiency.
11. The transmitter of claim 1 , wherein a power of the auxiliary pulse shape used for converting the auxiliary signal is smaller than a power of the primary pulse shape used for converting the primary signal by at least 10 dB such that the power of the auxiliary signal is negligible with respect to the power of the primary signal.
This invention relates to wireless communication systems, specifically to a transmitter design that reduces interference between primary and auxiliary signals. The problem addressed is the unintended interference caused by auxiliary signals when transmitted alongside primary signals, which can degrade communication quality. The solution involves a transmitter that uses different pulse shapes for the primary and auxiliary signals, with the auxiliary pulse shape having significantly lower power than the primary pulse shape. The power of the auxiliary pulse shape is at least 10 dB lower than the primary pulse shape, ensuring the auxiliary signal's power is negligible compared to the primary signal. This design minimizes interference while maintaining the integrity of the primary signal transmission. The transmitter may include components for generating, modulating, and combining the primary and auxiliary signals, with the auxiliary signal's reduced power preventing it from disrupting the primary signal's reception. The invention is particularly useful in scenarios where auxiliary signals are used for control, synchronization, or other secondary functions without compromising the main communication link.
12. The transmitter of claim 1 , wherein the primary pulse shape and the auxiliary pulse shape comply with at least one of a plurality of pulse duration constraints.
This invention relates to wireless communication systems, specifically to a transmitter design that uses primary and auxiliary pulse shapes to improve signal transmission. The problem addressed is optimizing pulse shapes to meet regulatory and performance constraints while maintaining efficient data transmission. The transmitter generates a primary pulse shape for carrying data and an auxiliary pulse shape for additional signal processing. Both pulse shapes are designed to comply with at least one of several pulse duration constraints, which may include maximum or minimum pulse widths, duty cycle limits, or spectral mask requirements. These constraints ensure compliance with regulatory standards and minimize interference with other wireless systems. The primary pulse shape is used for transmitting the main data signal, while the auxiliary pulse shape may be used for synchronization, channel estimation, or other auxiliary functions. By enforcing pulse duration constraints, the transmitter ensures that the combined signal meets regulatory requirements while maintaining desired performance characteristics. This approach allows for flexible pulse design while adhering to strict operational limits. The invention is particularly useful in systems where pulse duration must be carefully controlled to avoid interference or meet specific spectral efficiency targets.
13. The transmitter of claim 1 , wherein the processor is adapted to create the joint output signal to comply with at least one of a plurality of signal spectral constraints.
A transmitter system is designed to generate a joint output signal that meets specific spectral constraints while optimizing transmission efficiency. The system includes a processor that processes input signals to produce a combined output signal, ensuring compliance with predefined spectral requirements. These constraints may include limitations on signal bandwidth, power spectral density, or other regulatory or operational restrictions. The processor dynamically adjusts the output signal to satisfy at least one of these constraints, allowing the transmitter to operate within legal or system-specific boundaries while maintaining performance. This approach is particularly useful in wireless communication systems where strict spectral regulations apply, such as in cellular networks, satellite communications, or other radio frequency applications. By ensuring the output signal adheres to the required constraints, the transmitter avoids interference with other systems and complies with regulatory standards. The system may also incorporate additional features, such as adaptive modulation or power control, to further enhance transmission quality and efficiency. The processor's ability to dynamically adjust the signal ensures flexibility in different operational environments, making the transmitter suitable for various communication scenarios.
14. The transmitter of claim 1 , wherein the primary pulse shape and the auxiliary pulse shape are constructed using an ancestor function.
This invention relates to wireless communication systems, specifically to a transmitter design that improves signal transmission efficiency and reliability. The problem addressed is the need for flexible and efficient pulse shaping in wireless transmitters to optimize spectral efficiency, reduce interference, and enhance signal integrity. The transmitter includes a primary pulse shape and an auxiliary pulse shape, both constructed using an ancestor function. The ancestor function serves as a foundational mathematical function from which the primary and auxiliary pulse shapes are derived. The primary pulse shape is used for the main data transmission, while the auxiliary pulse shape is used for additional signal processing, such as error correction or interference mitigation. By deriving both pulse shapes from the same ancestor function, the transmitter ensures compatibility and synchronization between the primary and auxiliary signals, improving overall system performance. The ancestor function may be a known mathematical function, such as a Gaussian, raised cosine, or root raised cosine function, or a custom-designed function tailored to specific system requirements. The use of an ancestor function allows for precise control over the pulse shapes, enabling optimization for different communication scenarios, such as high-speed data transmission, low-power operation, or multi-user environments. The transmitter may also include additional components, such as modulators, filters, and amplifiers, to further enhance signal quality and transmission efficiency. This design provides a flexible and efficient solution for modern wireless communication systems.
15. The transmitter of claim 1 , wherein the auxiliary pulse shape is based on the primary pulse shape.
A transmitter system is designed to improve signal transmission in wireless communication by using a combination of primary and auxiliary pulse shapes. The primary pulse shape is the main waveform used for transmitting data, while the auxiliary pulse shape is derived from the primary pulse shape to enhance signal characteristics. The auxiliary pulse shape is specifically designed to be based on the primary pulse shape, ensuring compatibility and coherence between the two waveforms. This relationship allows the transmitter to optimize signal integrity, reduce interference, and improve overall communication performance. The auxiliary pulse shape may be modified or adjusted relative to the primary pulse shape to achieve desired transmission properties, such as reduced spectral leakage or improved synchronization. The system may be used in various wireless communication applications, including but not limited to, cellular networks, Wi-Fi, and other radio frequency (RF) communication systems. The use of a derived auxiliary pulse shape helps maintain signal quality while adapting to different transmission conditions.
16. The transmitter of claim 1 , wherein the processor is adapted to perform a superposition in the frequency domain after separately converting the primary sequence and the auxiliary sequence into the frequency domain.
This invention relates to wireless communication systems, specifically improving data transmission efficiency by combining primary and auxiliary data sequences in the frequency domain. The problem addressed is the need for more efficient spectrum utilization and improved data throughput in wireless transmissions. The transmitter includes a processor that processes primary and auxiliary data sequences. The processor converts both sequences into the frequency domain separately before performing a superposition operation. This allows the primary and auxiliary sequences to be combined in a way that optimizes spectral efficiency and minimizes interference. The superposition in the frequency domain ensures that the combined signal retains the integrity of both sequences while maximizing the use of available bandwidth. This technique is particularly useful in scenarios where multiple data streams need to be transmitted simultaneously without significant degradation in signal quality. The invention enhances the overall performance of wireless communication systems by enabling more efficient data transmission and better resource utilization.
17. The transmitter of claim 1 , wherein the processor is adapted to join the primary signal and the auxiliary signal through a first partial join in the time domain of the respective primary and auxiliary sequences and a second partial join in the frequency domain.
This invention relates to signal transmission systems, specifically methods for combining primary and auxiliary signals to improve transmission efficiency and reliability. The problem addressed is the need to efficiently merge multiple signals while minimizing interference and maintaining signal integrity, particularly in wireless communication systems. The transmitter includes a processor that performs a two-stage signal joining process. First, the primary and auxiliary signals are partially joined in the time domain, where their respective sequences are aligned or combined. This initial step ensures temporal synchronization between the signals. Next, a second partial join is performed in the frequency domain, where the signals are further combined by adjusting their spectral components. This dual-domain approach allows for optimized signal integration, reducing distortion and improving overall transmission quality. The primary signal represents the main data stream, while the auxiliary signal contains supplementary information or error-correcting data. By combining them in both time and frequency domains, the system enhances robustness against noise and interference, particularly in high-frequency or multi-path environments. The processor dynamically adjusts the joining parameters based on signal characteristics and channel conditions to ensure optimal performance. This method is particularly useful in wireless communication systems, such as 5G or IoT networks, where efficient signal transmission is critical. The dual-domain joining process improves data throughput and reliability while minimizing computational overhead.
18. The transmitter of claim 1 , wherein the joint output signal is transmitted simultaneously as a plurality of partial output signals through a plurality of power amplifiers to support a multi input multi output, MIMO, transmission.
This invention relates to wireless communication systems, specifically improving signal transmission efficiency in multi-input multi-output (MIMO) configurations. The problem addressed is the need for efficient power amplification in MIMO systems where multiple signals must be transmitted simultaneously without interference or signal degradation. The transmitter includes a signal processing unit that generates a joint output signal from multiple input signals. This joint output signal is then split into multiple partial output signals, each corresponding to a different transmission path in the MIMO system. Each partial output signal is amplified by a dedicated power amplifier before being transmitted through a separate antenna. The power amplifiers operate in a coordinated manner to ensure that the partial output signals maintain their phase and amplitude relationships, preserving the integrity of the joint output signal across all transmission paths. The system ensures that the partial output signals are transmitted simultaneously, allowing the MIMO system to achieve high data rates and reliable communication by leveraging spatial diversity. The use of multiple power amplifiers prevents signal distortion that could occur if a single amplifier were overloaded, while the coordinated amplification maintains the necessary signal coherence for effective MIMO operation. This approach enhances transmission efficiency and reliability in wireless communication systems employing MIMO technology.
19. The transmitter of claim 1 , wherein the joint output signal is transmitted simultaneously as a plurality of partial output signals through a plurality of power amplifiers divided to a plurality of subsets.
This invention relates to wireless communication systems, specifically improving transmission efficiency and power handling in radio frequency (RF) transmitters. The problem addressed is the need to efficiently amplify and transmit high-power signals while maintaining signal integrity and reducing distortion. The transmitter includes a signal processing unit that generates a joint output signal from multiple input signals. This joint output signal is then divided into multiple partial output signals, which are transmitted simultaneously through a plurality of power amplifiers. The power amplifiers are organized into multiple subsets, allowing for flexible power distribution and load balancing. Each subset of amplifiers can operate independently or in coordination to amplify different portions of the signal, ensuring efficient power usage and minimizing nonlinear distortion. The division of the joint output signal into partial signals enables parallel amplification, reducing the load on individual amplifiers and improving overall system reliability. By distributing the signal across multiple amplifiers, the transmitter can handle higher power levels without compromising performance. This approach also allows for dynamic adjustment of amplifier subsets based on signal requirements, optimizing power consumption and thermal management. The invention is particularly useful in high-power wireless communication systems, such as base stations or broadcast transmitters, where efficient signal amplification and transmission are critical. The use of multiple amplifier subsets provides redundancy and scalability, enhancing system robustness and adaptability to varying transmission demands.
20. The transmitter of claim 1 , wherein the processor is adapted to create at least one demodulation reference signal similarly to the joint output signal.
This invention relates to wireless communication systems, specifically to transmitters that generate and process demodulation reference signals (DMRS) for signal demodulation. The problem addressed is ensuring accurate demodulation of transmitted signals by generating DMRS that closely match the characteristics of the joint output signal, which combines multiple input signals. The transmitter includes a processor that creates at least one DMRS in a manner similar to the joint output signal. This involves processing the DMRS using the same or comparable techniques applied to the joint output signal, such as modulation, precoding, or beamforming, to maintain consistency between the reference and data signals. The DMRS is then transmitted alongside the joint output signal to enable precise demodulation at the receiver. This approach improves signal integrity and reliability in multi-user or multi-stream communication scenarios by ensuring the reference signal accurately represents the transmitted data. The invention is particularly useful in advanced wireless systems like 5G and beyond, where multiple signals are combined and transmitted simultaneously.
21. A receiver, comprising a receiver frontend and a processor, wherein: the receiver frontend is adapted to convert a synthesis of a near-constant modulus (STORM) signal received in the time domain from a transmitter into a STORM output baseband signal (S STORM ) as an input signal to the processor; and the processor is adapted to demodulate the input signal received from the transmitter, the STORM signal having been created as a joint output signal for time domain transmission to the receiver based on a combination of a frequency domain primary signal and a frequency domain auxiliary signal, the primary signal and the auxiliary signal having been created by converting a primary sequence of modulation symbols into the primary signal using a primary pulse shape and an auxiliary sequence of modulation symbols into the auxiliary signal using an auxiliary pulse shape, respectively.
This invention relates to a receiver for processing a near-constant modulus (STORM) signal, which is a type of signal designed to maintain a near-constant envelope in the time domain while efficiently transmitting data. The problem addressed is the need for a receiver capable of accurately demodulating such signals, which are generated by combining a primary signal and an auxiliary signal in the frequency domain before transmission. The receiver includes a frontend and a processor. The frontend converts the received STORM signal from the time domain into a baseband output signal, which serves as the input to the processor. The processor then demodulates this input signal. The STORM signal itself is constructed by combining a frequency-domain primary signal and a frequency-domain auxiliary signal. The primary signal is derived from a sequence of modulation symbols shaped by a primary pulse shape, while the auxiliary signal is derived from an auxiliary sequence of modulation symbols shaped by an auxiliary pulse shape. This combination ensures the transmitted signal has a near-constant envelope, improving transmission efficiency and reducing distortion. The receiver is specifically adapted to handle the unique characteristics of STORM signals, ensuring reliable demodulation of the transmitted data. The use of distinct pulse shapes for the primary and auxiliary signals allows for optimized signal reconstruction at the receiver. This approach enhances performance in communication systems where signal integrity and power efficiency are critical.
22. The receiver of claim 21 , wherein the processor is adapted to disregard the auxiliary signal when demodulating the input signal.
This invention relates to signal processing in communication systems, specifically addressing the challenge of handling auxiliary signals that may interfere with or complicate the demodulation of a primary input signal. The system includes a receiver with a processor that selectively processes an input signal, which may contain both a primary signal and an auxiliary signal. The processor is configured to demodulate the input signal while optionally disregarding the auxiliary signal during this process. This selective processing improves signal clarity and reduces interference, particularly in scenarios where the auxiliary signal is not needed for the intended application. The receiver may also include components for filtering, amplifying, or otherwise conditioning the input signal before demodulation. The ability to ignore the auxiliary signal ensures that the primary signal is extracted with higher accuracy, which is critical in applications requiring precise signal interpretation, such as wireless communications, radar systems, or sensor networks. The invention enhances signal processing efficiency by avoiding unnecessary computation on irrelevant signal components, thereby optimizing performance and resource usage.
23. The receiver of claim 21 , wherein the processor is adapted to use at least one demodulation reference signal to demodulate the input signal.
This invention relates to wireless communication systems, specifically to a receiver designed to improve signal demodulation in environments with interference or multipath effects. The receiver includes a processor that processes an input signal to extract data, addressing challenges such as signal distortion and noise that degrade communication reliability. A key feature is the use of at least one demodulation reference signal (DMRS) to assist in accurately demodulating the input signal. The DMRS provides known reference points that help the processor correct phase and amplitude errors introduced during transmission, ensuring accurate data recovery. The receiver may also include an antenna for receiving the input signal and a memory for storing processing instructions or intermediate data. The processor is configured to apply advanced signal processing techniques, such as channel estimation and equalization, to mitigate interference and improve signal integrity. This approach enhances communication performance in high-mobility or dense network scenarios where traditional demodulation methods may fail. The invention is particularly useful in 5G and beyond-5G wireless systems, where high data rates and low latency are critical. By leveraging DMRS, the receiver achieves robust demodulation, reducing errors and improving overall system efficiency.
24. A non-transitory computer-readable storage medium storing a computer program which, when executed by a processor of a transmitter, causes the processor to: convert a primary sequence of modulation symbols into a primary signal in the frequency domain, using a primary pulse shape; convert an auxiliary sequence of modulation symbols, created from the primary sequence, to an auxiliary signal in the frequency domain using an auxiliary pulse shape; and create, based on the primary signal and the auxiliary signal, a joint output signal for transmission to a receiver in the time domain.
This invention relates to wireless communication systems, specifically improving signal transmission efficiency and reliability. The problem addressed is the need for more robust and spectrally efficient signal transmission methods, particularly in environments with interference or limited bandwidth. The invention describes a method for generating a joint output signal from a transmitter. A primary sequence of modulation symbols is converted into a primary signal in the frequency domain using a primary pulse shape. Simultaneously, an auxiliary sequence of modulation symbols, derived from the primary sequence, is converted into an auxiliary signal in the frequency domain using a different auxiliary pulse shape. These two signals are then combined to create a joint output signal in the time domain for transmission to a receiver. The auxiliary sequence may be generated by applying a transformation, such as filtering or encoding, to the primary sequence to enhance certain signal properties, such as reducing interference or improving error correction. The primary and auxiliary pulse shapes may be designed to optimize spectral efficiency, reduce out-of-band emissions, or improve signal integrity. The joint output signal leverages the combined benefits of both pulse shapes, allowing for more reliable communication in challenging environments. This approach can be applied in various wireless communication standards, including 5G and beyond, to improve data throughput and link reliability.
Unknown
June 9, 2020
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.